What is that graphic near the top of Philosophistry? (A Visual Walk-Through on BlogFabrics)

I created this tutorial after discovering that my biggest fan Peter did not even understand how they work or what they do. This is a shame, because it's one of my most treasured pieces of Philosophistry, and is something that I haven't seen done anywhere else.

Peter also lent me Edward Tufte's academic, but compelling, Visual Explanations, which inspired and guided me in creating this walk-through.

Stay tuned for advanced theory about BlogFabrics, including its "cognitive gift" as a "nostalgia generator" and its ability to slow time down!!